Activation Energy Calculator

Activation Energy Calculator calculator can be used to calculate the activation energy (Ea) using the Arrhenius equation.

Input Parameters

Calculation Results

Calculation Formula

Ea = -R × (ΔG° / ΔS°)

Where:
R = 8.314 J/mol·K (Gas Constant)
ΔG° = Change in Gibbs Free Energy
ΔS° = Change in Entropy

Result

Activation Energy (Ea) will be displayed here

Activation Energy Calculator Usage Guide

Learn how to use the Activation Energy Calculator calculator and its working principles

How to Use the Calculator

  1. Enter the change in Gibbs free energy (ΔG°) in Joules per mole (J/mol).
  2. Enter the change in entropy (ΔS°) in Joules per mole per Kelvin (J/mol·K).
  3. Click the "Calculate" button to compute the activation energy (Ea).
  4. The result will be displayed in Joules per mole (J/mol).

Understanding the Formula

The activation energy (Ea) is calculated using the Arrhenius equation:

Ea = -R × (ΔG° / ΔS°)

Where:

  • Ea = Activation Energy (J/mol)
  • R = Gas constant (8.314 J/mol·K)
  • ΔG° = Change in Gibbs Free Energy (J/mol)
  • ΔS° = Change in Entropy (J/mol·K)

This formula helps in understanding the energy barrier that must be overcome for a chemical reaction to occur.